{"title":" SICP\u3092\u8aad\u3080(34) \u554f\u984c2.1 \u3061\u3068\u306f\u307e\u3063\u305f\u3002","provider_url":"https://hatena.blog","author_name":"tanakaBox","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20070716%2F1184589058\" title=\" SICP\u3092\u8aad\u3080(34) \u554f\u984c2.1 \u3061\u3068\u306f\u307e\u3063\u305f\u3002 - \u30dc\u30af\u30ce\u30b9\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"type":"rich","width":"100%","blog_title":"\u30dc\u30af\u30ce\u30b9","provider_name":"Hatena Blog","height":"190","version":"1.0","url":"https://boxnos.hatenablog.com/entry/20070716/1184589058","blog_url":"https://boxnos.hatenablog.com/","author_url":"https://blog.hatena.ne.jp/tanakaBox/","published":"2007-07-16 21:30:58","description":"\u554f\u984c 2.1 \u305d\u3046\u3044\u3048\u3070\u300c\u518d\u4ee3\u5165\u306e\u65b9\u6cd5\u3092\u77e5\u3089\u306a\u3044\u300d\u3068\u3044\u3046\u4e8b\u5b9f\u306b\u6c17\u304c\u3064\u3044\u305f\u3002\u6b63\u8ca0\u3092\u9006\u306b\u3059\u308b\u3060\u3051\u3067\u5927\u5909\u3060\u30fb\u30fb\u30fb\u3002\u3046\u301c\u3093\u3001\u3046\u301c\u3093\u3002\u65b0\u3057\u3044\u5909\u6570\u3092\u7528\u610f\u3057\u3066\u4ee3\u5165\u3059\u308b\u624b\u3082\u3042\u308b\u3051\u3069\u3001\u306a\u3093\u304bBASIC!\u3063\u3066\u611f\u3058\u306a\u306e\u3067\u3001\u30d1\u30b9\u3002\u8003\u3048\u305f\u672b\u306b\u3001 (define (make-rat n d) (define (rat-normal x) (if (negative? (denom x)) (cons (* -1 (numer x)) (* -1 (denom x))) x)) (define (rat-gcd x) (let ((g (gcd (numer x) (denom x)))) (cons (/ (numer \u2026","categories":["Scheme"]}